gitlab-org--gitlab-foss/lib/gitlab/cleanup/project_upload_file_finder.rb

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2018-07-26 17:23:33 -04:00
# frozen_string_literal: true
module Gitlab
module Cleanup
class ProjectUploadFileFinder
FIND_BATCH_SIZE = 500
ABSOLUTE_UPLOAD_DIR = FileUploader.root.freeze
EXCLUDED_SYSTEM_UPLOADS_PATH = "#{ABSOLUTE_UPLOAD_DIR}/-/*".freeze
EXCLUDED_HASHED_UPLOADS_PATH = "#{ABSOLUTE_UPLOAD_DIR}/@hashed/*".freeze
EXCLUDED_TMP_UPLOADS_PATH = "#{ABSOLUTE_UPLOAD_DIR}/tmp/*".freeze
# Paths are relative to the upload directory
def each_file_batch(batch_size: FIND_BATCH_SIZE, &block)
cmd = build_find_command(ABSOLUTE_UPLOAD_DIR)
Open3.popen2(*cmd) do |stdin, stdout, status_thread|
yield_paths_in_batches(stdout, batch_size, &block)
raise "Find command failed" unless status_thread.value.success?
end
end
private
def yield_paths_in_batches(stdout, batch_size, &block)
paths = []
stdout.each_line("\0") do |line|
paths << line.chomp("\0")
if paths.size >= batch_size
yield(paths)
paths = []
end
end
yield(paths) if paths.any?
end
def build_find_command(search_dir)
cmd = %W[find -L #{search_dir}
-type f
! ( -path #{EXCLUDED_SYSTEM_UPLOADS_PATH} -prune )
! ( -path #{EXCLUDED_HASHED_UPLOADS_PATH} -prune )
! ( -path #{EXCLUDED_TMP_UPLOADS_PATH} -prune )
-print0]
ionice = which_ionice
cmd = %W[#{ionice} -c Idle] + cmd if ionice
log_msg = "find command: \"#{cmd.join(' ')}\""
Rails.logger.info log_msg # rubocop:disable Gitlab/RailsLogger
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cmd
end
def which_ionice
Gitlab::Utils.which('ionice')
rescue StandardError
# In this case, returning false is relatively safe,
# even though it isn't very nice
false
end
end
end
end